The reason you should shuffle 7 times

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References:
Key paper, Bayer & Diaconis: https://www.stat.berkeley.edu/~aldous...
Diaconis on @numberphile:    • The Best (and Worst) Ways to Shuffle ...  
I also enjoyed a write up of the Bayer & Diaconis paper in Francis Su's Mathematics for Human Flourishing

0:00 The Shuffling Problem
2:18 The minimum number of shuffles
8:00 Gilbert Shannon Reeds Model
10:30 Computing Probabilities
15:52 Total Variation Distance
18:09 Brilliant.org/TreforBazett

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